net: Cleanup class/struct forward declarations

net/ssl/channel_id_service.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SSL_CHANNEL_ID_SERVICE_H_
 #define NET_SSL_CHANNEL_ID_SERVICE_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 13 matching lines @@
 class TaskRunner;
 }  // namespace base
 
 namespace crypto {
 class ECPrivateKey;
 }  // namespace crypto
 
 namespace net {
 
 class ChannelIDServiceJob;
-class ChannelIDServiceWorker;
 
 // A class for creating and fetching Channel IDs.
 
 // Inherits from NonThreadSafe in order to use the function
 // |CalledOnValidThread|.
 class NET_EXPORT ChannelIDService
     : NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   class NET_EXPORT Request {
    public:
@@ skipping 142 matching lines @@
   uint64_t workers_created_;
 
   base::WeakPtrFactory<ChannelIDService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChannelIDService);
 };
 
 }  // namespace net
 
 #endif  // NET_SSL_CHANNEL_ID_SERVICE_H_